(11 Mar 2021, 1:08 am)stagecoachbusdepot wrote The 'history and survey' booklet which the map comes from is a cracking read for anyone interested in how the Sunderland public transport offering developed and grew over it's first six decades - well worth it if you can get your hands on a copy.  Sadly the detail on the map itself is no easier to read in the printed format in the booklet...clearly the folk of Sunderland had outstanding eyesight back in the 50s!

I didn't even know such a book existed until the other day.
It does sound an interesting read mind.